Methyl 4-(chloromethyl)-3-(difluoromethyl)pyridine-2-carboxylate
Ethyl 3-(bromomethyl)-5-(difluoromethyl)pyridine-4-acetate
Methyl 2-(chloromethyl)-6-(difluoromethyl)pyridine-3-carboxylate
Ethyl 2-(bromomethyl)-5-(difluoromethyl)pyridine-4-acetate
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